Clipboard attachment for shopping carts



FIG. 1 is a perspective view of a clipboard attachment for shopping carts showing our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a front elevation view thereof;

FIG. 5 is a side elevation view thereof.

The undisclosed side is the same in appearance as the side shown. 

The ornamental design for a clipboard attachment for shopping carts, substantially as shown and described. 